Most of iPhone 4 users didn't update to iOS 4.2.1 as it updates baseband and make it not unlockable. So in case you got an iPhone 4 on older 01.59.00 baseband, we have been tipped off about a solution for that. The below steps will guide you to update iPhone 4 to iOS 4.2.1 while preserving the same older baseband 01.59.00 and unlock it.

A few months ago, Camera+ was pulled from the app store because it violated certain provisions of the SDK. As announced by tap tap tap yesterday, Camera+ 2.0 is now live in the app store including a huge list of new features and interface improvements, such as a redesigned lightbox, faster start-up times, a timer shooting mode, lots of new modes and effects. From a first look at the app, it looks like one massive update.

Facebook accidentally went live with a handful of prototype features earlier today, including a site-wide yet short-lived overhaul of Pages.
Roughly 45 minutes after the mistaken update, Facebook disabled the site, reverted back to its previous state and then tweeted apologetically about the downtime. But that brief span of time was enough for Facebook members and Page admins to get a sneak peak at new features in the works.
Facebook admitted to pushing features before their time.

We've heard several reports of people having various problems trying to stream movies and music to their AppleTV via AirPlay using Time Capsules and AirPort Base Stations. Hopefully for those experiencing problems, your solution is just a download away. Apple has just released AirPort Base Station and Time Capsule Firmware Update 7.5.2. The update "fixes some issues with AirPlay streaming." Additionally it provides:

We already told you about Cydia and Rock.app integration and it was a great success for Cydia, but some users noticed heavy load of apps, and some complications with Cydia. So, Jay Freeman (the creator of Cydia, a.k.a Saurik) decided to give Cydia tons of new features which will satisfy all users, also will improve some issues, and improve it's speed.